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The problem of object localization in image appear ubiquitously in computer vision applications including image classification, object detection and visual tracking. Recently, it is shown that multiple-instance learning(MIL) which is regarded as the fourth machine learning framework compared with supervised learning, unsupervised learning and reinforce learning has been verified that will get good...
Neologism is a new word or new interpretation of an old word to describe and explain reality in a new way. As the root of knowledge, the detection work for neologism is essential but challenging. This paper presents a novel strategy for neologism detection from youngsters by an overlapping community detection method based on complex network which constructed by social texts. We pre-process our corpus...
The automated warehouse considered here consists of a number of rack locations with three cranes, a narrow aisle shuttle, and several buffer stations with the roller. Based on analyzing of the behaviors of the active resources in the system, a modular and computerized model is presented via a colored timed Petri net approach, in which places are multicolored to simplify model and characterize control...
We propose a system for guiding a visually impaired person toward a target product on a store shelf using visual-auditory feedback. The system uses a hand-held, monopod-mounted CCD camera as its sensor and recognizes a target product in the images using sparse feature vector matching. Processing is divided into two phases: In Phase1, the system acquires an image, recognizes the target product, and...
In this paper, a substrate integrated spiral resonator based on strongly coupled magnetic resonances, suitable for wireless power transfer (WPT) applications is presented. Compactness that driving loop and source coil are integrated in one substrate, ease of manufacture and application is achieved with high transferring efficiency and large distance. Without load coil, the source coil does not transfer...
In this paper, a motion-information-based 3D video coding method is proposed for the texture plus depth 3D video format. The synchronized global motion information of camcorder is sampled to assist the encoder to improve its rate-distortion performance. This approach works by projecting temporal previous frames into the position of the current frame using the depth and motion information. These projected...
A tunable antenna with continuously sweeping linear polarization (LP) is proposed in this paper. This tunable antenna consists of a variable power divider (VPD) based on Composite Right/Left-Handed (CRLH) transmission line and a patch antenna. The VPD is a combination of a Wilkinson power divider, a 90 degree bridge and two CRLH tunable phase shifters. The CRLH phase shifters are the core tunable...
Planar surface is a common feature in man-made structure, thus accurate detection of planar surface can benefit the image/video segmentation and reconstruction and also the navigation system of robots. Since depth map represents the distance from one object to the capturing camera in a grey image, it also can represent the surface characteristics of the objects. So in this paper, we propose a novel...
This paper proposes an unsupervised technique for detecting planar surfaces on single depth map image. The proposed method can detect planar surfaces by adopting dynamic seed growing technique without using texture information. So aided with this mechanism to control the growing process, each seed patch can grow to its maximum extent and then the next seed patch begins to grow. This process avoids...
With the development of computer network technology, Sina micro logging platform have become the birthplace of the hot spots and important route of transmission. Due to the complexity of the network information, sometimes, it is necessary to control the spread of some of microblogging. The forwarding prediction system can make contribution to build a better microblogging environment. The used dataset...
We experimentally demonstrate an infrared refractive index sensor based on plasmonic perfect absorbers for glucose concentration sensing, with the figure of merit (FOM*) around 55 and a bulk wavelength sensitivity around 600nm/RIU.
We design low-loss single-mode GeSn mid-infrared waveguides on group-IV substrates including Si substrates and Ge-on-SOI substrates. The waveguide geometries under single mode condition are optimized for different GeSn alloy compositions and polarizations.
A novel structure of coaxial cavity filter is proposed, which is characterized by using mixed-cavities, improved performance, and good tunability. Mixed-cavities mean that the geometry shape of the cavities is different or the type of the resonators is different. In this paper, a high power bandpass filter with two transmission zeros based this new structure with different geometry shapes has been...
In this paper, a reconfigurable filter based on quarter-mode substrate integrated waveguide (QMSIW) resonator is proposed. QMSIW is employed to reduce the size of the filter, and the filter can be tuned with the varactors loaded on the QMSIW. QMSIW resonator with a single varator loaded is studied and a two order filter is designed and simulated. The simulated results show that the work frequency...
This paper introduces a novel wide stopband microstrip bandpass filter working at 2 GHz. Stepped-impedance quarter-wavelength resonators are used here to reduce the size of the filter. Mixed electric and magnetic coupling between the resonators are adopted to introduce two transmission zeros on each side of the passband. Thus, the selectivity of the filter is improved. Also, due to the cancellation...
In this work, two types of novel dual-band power dividers using substrate integrated circular cavity are proposed. Dual-band response is achieved by TM010 mode and TM110 mode of the circular resonator. It has been investigated that the first designed power divider's two center frequencies have a fixed frequency ratio of 1.59. Furthermore, substrate integrated circular cavity with two perturbation...
Depth map based 3-D view synthesis technique allows to synthesize different virtual perspectives of the same 3-D content, and the lifelike 3-D view perception of these virtual perspectives is highly depending on the accuracy of depth information. So, although depth map is not viewed by the users, however, its quality directly affects that of the synthesized virtual views by the 3-D warping process...
Along with the explosion of Internet user, Internet has been considered as the new channel for companies implementing their sales promotion activities. Consequently, this study seeks to offer insight into how popular online promotions (price-discount, coupon and free shipping) influence consumer's quality perception and purchase intentions. Moreover, brand awareness was expected to moderate the relationship...
the purpose of this study is to examine the effect of online store atmosphere elements on consumer responses in terms of perceived product quality, information quality and satisfaction. More specific, an experimental design of online shopping website was established. The experiment was a 3 (website design: text/text plus product picture /text plus human picture) x 2 (website appeal: product describe/storytelling)...
In this paper, a second-order consensus protocol is designed in multi-agent systems. A general model of multi-agent systems with second-order dynamics is proposed, where for each agent, the second-order dynamics depend on the position, velocity, and decays of both position and velocity of agents. First, a necessary and sufficient condition is provided which ensures second-order consensus of multi-agent...
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